Hi,
phy25 opened a new pull request at
https://github.com/splitbrain/dokuwiki/pull/2929:
Exceptions raised by PHP nightly are all "trying to access array offset on
value of type bool/null". This patch adds checks in these situations.
Note: the only error in nightly now is supposed to be fixed in #2927:
css_at_import_less_test::test_basic
Array and string offset access syntax with curly braces is deprecated
/home/travis/build/splitbrain/dokuwiki/vendor/marcusschwarz/lesserphp/lessc.inc.php:761